Instructions
Preheat oven to 350°. Line 9 x 13 baking pan with foil.
Warm chili in microwave-safe bowl or in a saucepan on the stove.
Separate and open buns. Lightly spread inside of buns with mayonnaise and mustard.
Place a hot dog inside each bun. Pack hot dogs into prepared pan to fit.
Spoon chili over hot dogs, about 2 tablespoons each. Sprinkle shredded cheese over hot dogs, followed by the onions.
Cover pan with foil. Place pan on center rack of oven and bake 45 minutes.
Serve with pickles and potato salad.